Bolting machine



FIG. 1 is a perspective view of a bolting machine showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof which is a mirror image of the opposite side thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof.

The broken line showing is for illustrative purposes only, and forms no part of the claimed design. 

The ornamental design of a bolting machine, as shown and described. 